/*
 * Copyright (C) 2001-2011 Jacek Sieka, arnetheduck on gmail point com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef DCPLUSPLUS_DCPP_LOG_MANAGER_H
#define DCPLUSPLUS_DCPP_LOG_MANAGER_H

#include "typedefs.h"

#include "File.h"
#include "Singleton.h"
#include "TimerManager.h"
#include "CViewlinkDBManager.h"

class LogManagerListener
{
	public:
		virtual ~LogManagerListener() { }
		template<int I> struct X
		{
			enum { TYPE = I };
		};
		
		typedef X<0> Message;
		virtual void on(Message, const string&) noexcept { }
};

class LogManager : public Singleton<LogManager>, public Speaker<LogManagerListener>
{
	public:
		enum LogArea { CHAT, PM, DOWNLOAD, UPLOAD, SYSTEM, STATUS,
		               WEBSERVER,
#ifdef RIP_USE_LOG_PROTOCOL
		               PROTOCOL,
#endif
		               LAST
		             };
		enum {FILE, FORMAT};
		
		void log(LogArea area, const StringMap& params, bool p_only_file = false) noexcept
		{
			if (!p_only_file && BOOLSETTING(VIEW_SQLITE_LOG))
				CViewlinkDBManager::getInstance()->log(area, params);
			else
			{
				string path = SETTING(LOG_DIRECTORY);
				string msg;
				path += Util::formatParams(getSetting(area, FILE), params, false);
				msg = Util::formatParams(getSetting(area, FORMAT), params, false);
				log(path, msg);
			}
		}
		
		void message(const string& msg, bool p_only_file = false)
		{
			if (BOOLSETTING(LOG_SYSTEM))
			{
				StringMap params;
				params["message"] = msg;
				log(LogManager::SYSTEM, params, p_only_file);
			}
			fire(LogManagerListener::Message(), msg);
		}
		
		const string& getSetting(int area, int sel) const
		{
			return SettingsManager::getInstance()->get(static_cast<SettingsManager::StrSetting>(logOptions[area][sel]), true);
		}
		
		void saveSetting(int area, int sel, const string& setting)
		{
			SettingsManager::getInstance()->set(static_cast<SettingsManager::StrSetting>(logOptions[area][sel]), setting);
		}
		
	private:
		void log(const string& area, const string& msg) noexcept
		{
			Lock l(cs);
			try
			{
				string aArea = Util::validateFileName(area);
				File::ensureDirectory(aArea);
				File f(aArea, File::WRITE, File::OPEN | File::CREATE);
				f.setEndPos(0);
				if (f.getPos() == 0)
				{
					f.write("\xef\xbb\xbf");
				}
				f.write(msg + "\r\n");
			}
			catch (const FileException&)
			{
				// ...
			}
		}
		
		friend class Singleton<LogManager>;
		CriticalSection cs;
		
		int logOptions[LAST][2];
		
		LogManager()
		{
			logOptions[UPLOAD][FILE]        = SettingsManager::LOG_FILE_UPLOAD;
			logOptions[UPLOAD][FORMAT]      = SettingsManager::LOG_FORMAT_POST_UPLOAD;
			logOptions[DOWNLOAD][FILE]      = SettingsManager::LOG_FILE_DOWNLOAD;
			logOptions[DOWNLOAD][FORMAT]    = SettingsManager::LOG_FORMAT_POST_DOWNLOAD;
			logOptions[CHAT][FILE]          = SettingsManager::LOG_FILE_MAIN_CHAT;
			logOptions[CHAT][FORMAT]        = SettingsManager::LOG_FORMAT_MAIN_CHAT;
			logOptions[PM][FILE]            = SettingsManager::LOG_FILE_PRIVATE_CHAT;
			logOptions[PM][FORMAT]          = SettingsManager::LOG_FORMAT_PRIVATE_CHAT;
			logOptions[SYSTEM][FILE]        = SettingsManager::LOG_FILE_SYSTEM;
			logOptions[SYSTEM][FORMAT]      = SettingsManager::LOG_FORMAT_SYSTEM;
			logOptions[STATUS][FILE]        = SettingsManager::LOG_FILE_STATUS;
			logOptions[STATUS][FORMAT]      = SettingsManager::LOG_FORMAT_STATUS;
			logOptions[WEBSERVER][FILE]     = SettingsManager::LOG_FILE_WEBSERVER;
			logOptions[WEBSERVER][FORMAT]   = SettingsManager::LOG_FORMAT_WEBSERVER;
			
#ifdef RIP_USE_LOG_PROTOCOL
			logOptions[PROTOCOL][FILE]      = SettingsManager::LOG_FILE_PROTOCOL;
			logOptions[PROTOCOL][FORMAT]    = SettingsManager::LOG_FORMAT_PROTOCOL;
#endif
		}
		~LogManager() { }
		
};

#define LOG(area, msg) LogManager::getInstance()->log(area, msg)

#endif // !defined(LOG_MANAGER_H)

/**
 * @file
 * $Id: LogManager.h 568 2011-07-24 18:28:43Z bigmuscle $
 */
